Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Total Shareholders' Equity Attributable to CRH Shareholders	Preferred stock	Common stock	Treasury stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Noncontrolling Interests
Shares, outstanding, beginning balance (in shares) at Dec. 31, 2022			900,000	752,100,000
Balance at the beginning of the year at Dec. 31, 2022	$ 22,732	$ 22,157	$ 1	$ 302	$ (297)	$ 443	$ (787)	$ 22,495	$ 575
Treasury stock, common, shares beginning balance (in shares) at Dec. 31, 2022					(7,700,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,044	3,178						3,178	(134)
Other comprehensive income	174	171					171		3
Share-based compensation	123	123				123
Repurchase of common stock (in shares)					(38,200,000)
Repurchases of common stock	(2,019)	(2,019)			$ (2,019)
Repurchases and retirement of common stock (in shares)				(17,600,000)
Repurchases and retirement of common stock	(1,048)	(1,048)		$ (6)				(1,042)
Shares issued under employee share plans (in shares)					3,500,000
Shares issued under employee share plans	4	4			$ 117	(112)		(1)
Dividends declared on common stock	(1,688)	(1,688)						(1,688)
Distributions to noncontrolling interests	(8)								(8)
Transactions involving noncontrolling interests	(2)								(2)
Adjustment of redeemable noncontrolling interests to redemption value	(24)	(24)						(24)
Shares, outstanding, ending balance (in shares) at Dec. 31, 2023			900,000	734,500,000
Balance at the end of the year at Dec. 31, 2023	21,288	20,854	$ 1	$ 296	$ (2,199)	454	(616)	22,918	434
Treasury stock, common, shares ending balance (in shares) at Dec. 31, 2023					(42,400,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,493	3,492						3,492	1
Other comprehensive income	(442)	(389)					(389)		(53)
Share-based compensation	$ 125	125				125
Repurchase of common stock (in shares)	(15,872,321)				(2,600,000)
Repurchases of common stock	$ (180)	(180)			$ (180)
Repurchases and retirement of common stock (in shares)				(15,900,000)
Repurchases and retirement of common stock	(1,302)	(1,302)		$ (6)				(1,296)
Shares issued under employee share plans (in shares)					3,600,000
Shares issued under employee share plans	(3)	(3)			$ 242	(157)		(88)
Dividends declared on common stock	(956)	(956)						(956)
Distributions to noncontrolling interests	(30)								(30)
Divestiture of noncontrolling interests	(19)								(19)
Noncontrolling interests arising on acquisition	507								507
Transactions involving noncontrolling interests	19								19
Adjustment of redeemable noncontrolling interests to redemption value	(34)	(34)						(34)
Shares, outstanding, ending balance (in shares) at Dec. 31, 2024			900,000	718,600,000
Balance at the end of the year at Dec. 31, 2024	$ 22,466	21,607	$ 1	$ 290	$ (2,137)	422	(1,005)	24,036	859
Treasury stock, common, shares ending balance (in shares) at Dec. 31, 2024	(41,355,384)				(41,400,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 3,762	3,753						3,753	9
Other comprehensive income	792	748					748		44
Share-based compensation	$ 143	143				143
Repurchase of common stock (in shares)	(11,701,135)
Repurchases and retirement of common stock (in shares)				(11,700,000)
Repurchases and retirement of common stock	$ (1,181)	(1,181)		$ (4)				(1,177)
Shares issued under employee share plans (in shares)					3,100,000
Shares issued under employee share plans	(47)	(47)			$ 121	(168)		0
Dividends declared on common stock	(996)	(996)						(996)
Distributions to noncontrolling interests	(12)								(12)
Noncontrolling interests arising on acquisition	7								7
Transactions involving noncontrolling interests	137								137
Adjustment of redeemable noncontrolling interests to redemption value	(23)	(23)						(23)
Shares, outstanding, ending balance (in shares) at Dec. 31, 2025			900,000	706,900,000
Balance at the end of the year at Dec. 31, 2025	$ 25,048	$ 24,004	$ 1	$ 286	$ (2,016)	$ 397	$ (257)	$ 25,593	$ 1,044
Treasury stock, common, shares ending balance (in shares) at Dec. 31, 2025	(38,315,792)				(38,300,000)